
DS1338 I2C RTC with 56-Byte NV RAM
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TYPICAL OPERATING CHARACTERISTICS
IBAT vs. VBAT
550
600
650
700
750
800
850
900
950
1000
1050
1100
1150
1200
1250
1.3 1.8 2.3 2.8 3.3 3.8 4.3 4.8 5.3
VBAT (V)
SUP
PL
YCURRE
NT
(n
A
VCC=0V
RS1=RS0=1
IBATOSC2
(SQWE = 1)
IBATOSC1
(SQWE = 0)
IBAT vs. Temperature
VBAT = 3.0V
600
650
700
750
800
850
900
950
1000
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
SUP
PL
YCURRE
NT
(n
A
VCC=0V
SQWE=1
SQWE=0
ICC vs. VCC
50
75
100
125
150
175
200
225
250
1.8
2.3
2.8
3.3
3.8
4.3
4.8
5.3
VCC (V)
SUP
PL
YCURRE
NT
(u
A
SCL=400kHz
SCL=SDA=0Hz
Oscillator Frequency vs. Supply Voltage
32768.0
32768.1
32768.2
32768.3
32768.4
32768.5
1.3 1.8 2.3 2.8 3.3 3.8 4.3 4.8
Oscillator Supply Voltage (V)
FRE
QUE
NCY
(Hz
)